A wind turbine is installed in a location where the wind blows at 8 m/s. The air temperature is 10°C and the diameter of turbine blade is 30 m. If the overall turbine-generator efficiency is 35 percent, the electrical power production is:
(a) 79 kW
(b) 109 kW
(c) 142 kW
(d) 154 kW
(e) 225 kW